In LO Writer, when using Find and Replace, it is sometimes hard to spot the found (and highlighted) items. Is it possible to increase the contrast?
Here is how the found string " xxx " looks like:
macOS Monterey 12.2.1
LibreOffice 7.3.0.3
Similar question how-to-make-text-selection-in-writer-visible/66521.
First fix is to change selection colour in your OS. If you don’t want to do it, you can improve rendering by changing advanced options. See @mikekaganski’s suggestion.